Question

In order to avoid ConcurrentModificationException, i am resorting to the following:

        List<String> tobeRemoved = new ArrayList<String>();

        for (Object propertyKey : suppliedContent.keySet()) {
            key = (String) propertyKey;

            if (EqualityUtils.isMatching(rgx, key)) {
                tobeRemoved.add(key);
            }
        }

        for (String o : tobeRemoved) {
            suppliedContent.remove(o);
        }

Is there a cleaner way?

Answer 1

I think using iterator and call remove() on iterator when matching would do same.

Iterator<String> supplieIter  = suppliedContent.keySet().iterator();

    while(supplieIter.hasNext()){
        key = supplieIter.next();

        if (EqualityUtils.isMatching(rgx, key)) {
           supplieIter.remove()
        }
    }

EDIT: Hand typed code. There may be syntax errors.